#!/bin/bash

# Slackware build script for MLton
# Slackware build script for mlton
# Originally by Jockey S. Kyd (jockey dot kyd at gmail dot com)
# Modified by Ryan P.C. McQuen, WA, ryanpcmcquen@member.fsf.org
# Copyright 2018, Scot Doyle

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version, with the following exception:
# the text of the GPL license may be omitted..

# This program is distributed in the hope that it will be useful, but
# without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose. Compiling,
# interpreting, executing or merely reading the text of the program
# may result in lapses of consciousness and/or very being, up to and
# including the end of all existence and the Universe as we know it.
# See the GNU General Public License for more details.

# You may have received a copy of the GNU General Public License
# along with this program (most likely, a file named COPYING).  If
# not, see <http://www.gnu.org/licenses/>.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=mlton
VERSION=${VERSION:-20180207}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}
PREBUILT=${PREBUILT:-$PRGNAM-$VERSION-1.amd64-linux}

ARCH=${ARCH:-$(uname -m)}
case "$ARCH" in
    x86_64) : ;;
         *) printf "This script only supports x86_64.\n" 1>&2; exit 1 ;;
esac

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

set -e
rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PREBUILT $PRGNAM-$VERSION

tar xvf $CWD/$PREBUILT.tgz
tar xvf $CWD/$PRGNAM-$VERSION.src.tgz

# Permissions are already set
chown -R root:root $PREBUILT $PRGNAM-$VERSION

cd $PRGNAM-$VERSION

# Prefer the pre-built compiler
PATH=$TMP/$PREBUILT/bin:$PATH

# Without any ulimit, "amd64 code gen" uses all available memory.
ulimit -v 4000000

make -j1 all
make PREFIX="$PKG" install

# Fix ownership of stuff from 'make install'
chown -R root:root $PKG

# Binaries are already stripped

cd $PKG
mkdir -p usr
mv share/man usr
if [ "$1" = "-docs" ]; then
  mkdir -p usr/share/doc
  mv share/doc/$PRGNAM usr/share/doc/$PRGNAM-$VERSION
  cat $CWD/$PRGNAM.SlackBuild > usr/share/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
fi
rm -rf share

mv lib usr/lib64
mv bin usr
sed -i "s:^lib=.*:lib=/usr/lib64/mlton:" usr/bin/mlton

mkdir install
cat $CWD/slack-desc > install/slack-desc

/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
